Metabolism of 14C-glycine as a substrate for photorespiration of the leaf at different developmental stages of ephemeroides

Mamushina, N. S.; Zubkova, Elena; Yudina, O. S.

doi:10.1134/s1021443708010044

Cited by 2 publications

(1 citation statement)

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“…Once the leaf apex has emerged early in spring, the rapid growth of the whole plant starts. This could be guaranteed by the fact that the chloroplast structure is formed during underground growth in darkness, prior to the appearance of photosynthesis, which allows the plant to reach a maximum photosynthetic rate rapidly [ 57 , 58 , 59 ].…”

Section: Temperature and Aboveground Growth And Biomass Productionmentioning

confidence: 99%

The Role of Temperature in the Growth and Flowering of Geophytes

Khodorova

Boitel-Conti

2013

Plants

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Among several naturally occurring environmental factors, temperature is considered to play a predominant role in controlling proper growth and flowering in geophytes. Most of them require a “warm-cold-warm” sequence to complete their annual cycle. The temperature optima for flower meristem induction and the early stages of floral organogenesis vary between nine and 25 °C, followed, in the autumn, by a several-week period of lower temperature (4–9 °C), which enables stem elongation and anthesis. The absence of low temperature treatment leads to slow shoot growth in spring and severe flowering disorders. Numerous studies have shown that the effects of the temperature surrounding the underground organs during the autumn-winter period can lead to important physiological changes in plants, but the mechanism that underlies the relationship between cold treatment and growth is still unclear. In this mini-review, we describe experimental data concerning the temperature requirements for flower initiation and development, shoot elongation, aboveground growth and anthesis in bulbous plants. The physiological processes that occur during autumn-winter periods in bulbs (water status, hormonal balance, respiration, carbohydrate mobilization) and how these changes might provoke disorders in stem elongation and flowering are examined. A model describing the relationship between the cold requirement, auxin and gibberellin interactions and the growth response is proposed.

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Section: Temperature and Aboveground Growth And Biomass Productionmentioning

confidence: 99%